The signing of Darren Bent from Sunderland has launched a remarkable turnaround in the fortunes of manager Gerard Houllier. A lowly league position had the fans grumbling about the Frenchman but two league victories on the bounce, against Manchester City and Wigan Athletic, has seen Villa climb to 13th in the Premier League.
Although Bent is unable to play on Saturday, Houllier has a wealth of attacking options available to him and will be expecting the trio of Ashley Young, Marc Albrighton and Stewart Downing to terrify the Rovers defence.
Villa fans will be hoping for a repeat of a similar fixture back in September, when the boys in claret and blue beat Rovers 3-1 in the League Cup - with a lively Ashley Young grabbing two goals.
Rovers Looking To Continue Playing Expansive Football
Many predicted Steve Kean would struggle to step into Sam Allardyce's shoes but the new boss has impressed at Ewood Park - coaxing Rovers into a slightly more open style of play that has seen them rise up the table to eighth position.
A 2-0 win against West Brom last weekend was their third consecutive home victory and fans travelling to Villa Park will be hoping that their team can continue their impressive style of play away from Ewood Park.
Rovers lost their last two away games, at Chelsea and Sunderland, but with players like Morten Gamst Pedersen and Jason Roberts expressing their desire to battle for a first-team place, fans will be hoping that they can combine a fluent passing game with some steel to progress to the next round of the cup.
Gerard Houllier is without his record signing Darren Bent - who is cup-tied after scoring for Sunderland in their 2-1 loss to Notts County in the third round earlier in January.
The Villa manager has no fresh injury worries following Tuesday night's 2-1 win over Wigan Athletic but are still without Fabian Delph and Stephen Ireland - who both have knee injuries.Possible starting XI: Friedel; Cuellar, Collins, Dunne, Clark; Albrighton, Petrov, Makoun, Downing; A Young; Agbonlahor.
Blackburn manager Steve Kean admits that new loan signing Jermaine Jones is not yet fully accustomed to the speed of English football but is likely to include the American international in his starting XI after his impressive debut in the 2-0 win over West Brom last Sunday.
Loan signing Roque Santa Cruz is eligible to play at Villa Park as the striker was an unused substitute in Manchester City's 2-2 draw with Leicester City in the third round.
Kean has a relatively injury-free squad but is still without long-term absentees Ryan Nelsen and Phil Jones (both knee), and Vincent Grella and Keith Andrews (both groin).
Possible starting XI: Robinson; Salgado, Samba, Givet, Olsson; Hoilett, Dunn, J Jones, Pedersen; Kalinic, Santa Cruz.